Here's what to do: First you got to the second door on your right. There, defeat all the enemies and watch as a secret door opens. Enter it. It's kinda dark, but somewhere to you left there's a small hole. Roll up and go through it. In the next room you have to defeat the enemies in a specific order. It's easy, from small to big. Then the door will open which leads you to a save point. After the save point, defeat the boss and get the new item.
Seriously though, I don't have the game.
